Wagon-brake lock



(No Model.)

R. FORD, Sr. WAGON BRAKE 1.00K.

'Patented Sept. 25, 94.

' WITNESSES me xmms crans co. Immo-umm wnsnmnrou. n. c.

UNrTED STATES ROBERT FORD,

OF EARLING, IOWA.

WAGON-BRAKE LOCK.

SPECIFICATION forming part of Letters Patent No. 526,620, datedSeptember 25, 1894.

Application led February 24, 1894. Serial No. 5011352- (NO 11105813 Toall whom t may concern.-

Be it known that I, ROBERT FORD, Sr., a

citizen of the United States, and a resident of` Earling, in the countyof Shelby and State of Iowa, have invented certain new and usefulImprovements in VVagon-Brake Locks; and I do declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and 'usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

Figure l of the drawings is a representation of a side view showing theinvention applied. Fig. 2 is an enlarged view of the same. Fig. 3 is adetail view of the lock plate and clip. t

This invention has relation to certain new and useful improvements inlocks for wagon brakes, and it consists in the novel construction andcombination of parts, all as hereinafter described and pointed out inthe appended claim.

The object of the invention is to provide a simple and edective meansfor locking the brake lever without the use of the secondary, or pawllever, commonly employed.

Referring to the accompanying drawings illustrating the invention, theletter A designates the brake lever, which at its lower end portion ispivoted to a rack plate B. Said rack plate comprises an attachmentportion perforated to receive the securing screws, and a toothed segmentarm or arc-rack portion a, which is offset to one side of the attachmentportion. Secured to the intermediate portion of the said lever A is abracket C, said bracket and lever loosely embracing the" segment a. Thelower bent end portion of said bracket is shown as secured directly tothe lever, by a short bolt, screw, or rivet b, while the upper enlargedportion of the bracket which is parallel with the lever and at somelittle distance therefrom, is held by a clip D, which embraces the leverobliquely and is secured thereto by a stud or center pin d,

which extends through said lever and is secured in the said bracket.Loosely supported by the said center pin or stud is a lock plate F,having throughout the greater portion of its length, an arcuate curvedslot f, which loosely engages the aforesaid pin or stud. The upper andlower edges of the lock plate are curved and are guided in theirmovement by the arms of the clip D.

At one upper corner portion of the lock plate is an upward extension g,to which the brake mechanism is designed to be connected, and at thecorresponding lower corner portion is a detent lug or projection h,adapted to engage with the teeth of the segment or rack.

At the rear portion of the lower wall of the slot f is a depression f',designed to form a seat for the center pin when the detent is inengagement with the rack.

The operation is as follows: The tension of the brake mechanism drawsthe lock F forwardly and downwardly, holding the detent h in engagementwith the rack, the center pin seating in the depression f', the detentreadily passing from one tooth to another as the lever is operated toincrease the pressure of the brakes. When however, the lever is thrownforward to disengage the brakes, the detent, catching against the toothof the rack with which it is in engagement, throws the center pin out ofengagement with the depression f', permitting the pin to ride foi'- wardin the slot f, and throwing the lock into the position shown in Fig. 2,so that it rides over the teeth without engagement therewith.

The lock may also be applied to other kinds of levers, as well as brakelevers.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- In a lock for wagon brakes, the rackplate B having an offset toothed segment arm a, an operating lever Apivoted to the lower portion of said rack plate, a lock plate F havingan elongated arcuate slot therein loosely engaging a pin carried by saidoperating lever,

a. depression at one end of said slot for en gagement with said pin, adetent projecting from the opposite portion of said lock plate andarranged to engage the teeth of the segment, and an extension on saidlock plate at vthe same end with the datent, and having a directconnection with the brake mechanism, the tension of which holds saiddetent in engagementwith the said segment, substantially as specified. y1o In testimony whereof I affix my signature in presence of twowitnesses.

ROBERT FORD, SR.

Witnesses:

H. G. RETHLEFSEN, l M. FREUND.

